Merge branch 'master' of https://github.com/cbwest3/fio

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 6c9e9a4e55f065335a245570502222c655f6861e..5c5ac26faa6def67eedab45064e1cf47168060c2 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -1072,10 +1072,11 @@ I/O type
 
 .. option:: offset=int
 
-       Start I/O at the given offset in the file. The data before the given offset
-       will not be touched. This effectively caps the file size at `real_size -
-       offset`. Can be combined with :option:`size` to constrain the start and
-       end range that I/O will be done within.
+       Start I/O at the provided offset in the file, given as either a fixed size or
+       a percentage. If a percentage is given, the next ``blockalign``-ed offset
+       will be used. Data before the given offset will not be touched. This
+       effectively caps the file size at `real_size - offset`. Can be combined with
+       :option:`size` to constrain the start and end range of the I/O workload.
 
 .. option:: offset_increment=int